Nightly Build / build (push) Successful in 6m47s
- GET /api/file returns ETag (mtime+size) + X-Writable on disk files; PUT /api/file accepts optional if_match -> 409 Conflict on stale version (last-write-wins preserved when omitted), echoes the new ETag - FileViewerBase: View | Edit tabs for .md when the caller can write; source textarea with Save/Cancel, live preview while editing - Watcher no longer clobbers the buffer mid-edit: while editing with unsaved changes it probes the server ETag and only raises a conflict when the remote actually moved on (own-save echo is ignored) - Conflict banner: Reload remote | Copy mine, then reload | Overwrite - i18n (en/it/fr) + CSS; docs/projects.md updated